Only company in the world who is authorized to work on and service the Ford GT supercar transmission

Only company in the world to achieve CARB legality when tuning a forced induction application through a factory NISSAN ECU

We Know Cars

From our sales and customer service team, who are enthusiast themselves, to our in-house research and development team to our in-house installation center we are constantly testing and developing new products and working with other industry manufacturers to improve their products. These resources allow our Customer Support teams to be the most highly experienced team around.

Racing Heritage

STILLEN's founder, Steve Millen, enjoyed a wildly successful, multi-decade racing career in which he earned several titles including:

2 time IMSA world champion

2 time Mickey Thompson off-road champion

24 hours of Le Mans class winner

24 hours of Daytona overall winner

12 hours of Sebring overall winner

Winningest driver in IMSA GT history

Today, you can find Steve within the STILLEN campus overseeing new product development, checking in on the progress of installs being done in the service shop, discussing which new vendors to offer our customers and more.

Made in the USA

We design and manufacturer all STILLEN parts in our Southern California based campus, which consists of several warehouses and manufacturing plants that span over 100,000 sq. ft. and allow us to manufacture CNC machined, fabricated tube and sheet metal, and carbon fiber products in-house. To see our capabilities for yourself, stop by for a tour the next time you're in the Southern California area!

Choose from Thousands of Parts

STILLEN manufacturers thousands of products across a variety of vehicle platforms and works with hundreds of vendors to bring you the best selection of parts for your vehicle.

Low Price Guarantee

Bring us any advertised price for a product that we carry and we'll do our best to beat it. We believe that our customers deserve the best price possible for the products they buy, so our team is dedicated to giving you the best possible deal. Always make STILLEN your last stop for maximum savings and excellent customer service.

Manufacturer

Over 25 years ago a small company in Fresno, California had an idea to build the "best performing" lowering suspensions for the Chevrolet pickup. Fresno had been a haven for lowered vehicles and trucks were in abundance. Trucks were being lowered but their suspensions were terrible and not very roadworthy. Springs were either replaced with new ones not necessarily meant for the application and even worse they may be cut or heated with a torch at the local muffler shop to give the lowered stance that was cool. The stance looked good but the ride was terrible. Belltech's design staff had a better idea - Why not build a spindle where the wheels are higher but all of the rest of the front end geometry stays the same? In fact that's just what they did and the drop spindle that launched the Sport truck craze in America was born.
To go along with the drop spindle the rest of the truck suspension needed to be addressed also. Shackles, hanger kits, lowered coil springs and flip kits soon followed. Keeping with the spirit of the "best performing" suspension the Belltech staff designed and created these components using superior materials and designs. The result made Belltech the most asked for and successful truck suspension brand in the industry. Belltech's success in the late '80's and '90's made it possible for the company to grow from a modest beginning, to a larger manufacturing facility with a satellite warehouse and finally in 2003 to the current 115,000+ sq. ft. operation located in Sanger, California. The Sanger facility has made it possible to expand every aspect of the operation.
In early 2005 Belltech and its sister company Suspension Techniques joined the team of KW automotive North America, Inc., the North American arm of KW automotive GmbH, Germany. As part of KW automotive North America, Inc. Belltech continues its growth in product development and technology advancement along with its three sibling companies: KW Suspensions - The world leader in height and dampening adjustable coilover suspension.Over 25 years ago a small company in Fresno, California had an idea to build the "best performing" lowering suspensions for the Chevrolet pickup. Fresno had been a haven for lowered vehicles and trucks were in abundance. Trucks were being lowered but their suspensions were terrible and not very roadworthy. Springs were either replaced with new ones not necessarily meant for the application and even worse they may be cut or heated with a torch at the local muffler shop to give the lowered stance that was cool. The stance looked good but the ride was terrible. Belltech's design staff had a better idea - Why not build a spindle where the wheels are higher but all of the rest of the front end geometry stays the same? In fact that's just what they did and the drop spindle that launched the Sport truck craze in America was born.
To go along with the drop spindle the rest of the truck suspension needed to be addressed also. Shackles, hanger kits, lowered coil springs and flip kits soon followed. Keeping with the spirit of the "best performing" suspension the Belltech staff designed and created these components using superior materials and designs. The result made Belltech the most asked for and successful truck suspension brand in the industry. Belltech's success in the late '80's and '90's made it possible for the company to grow from a modest beginning, to a larger manufacturing facility with a satellite warehouse and finally in 2003 to the current 115,000+ sq. ft. operation located in Sanger, California. The Sanger facility has made it possible to expand every aspect of the operation.
In early 2005 Belltech and its sister company Suspension Techniques joined the team of KW automotive North America, Inc., the North American arm of KW automotive GmbH, Germany. As part of KW automotive North America, Inc. Belltech continues its growth in product development and technology advancement along with its three sibling companies: KW Suspensions - The world leader in height and dampening adjustable coilover suspension.Over 25 years ago a small company in Fresno, California had an idea to build the "best performing" lowering suspensions for the Chevrolet pickup. Fresno had been a haven for lowered vehicles and trucks were in abundance. Trucks were being lowered but their suspensions were terrible and not very roadworthy. Springs were either replaced with new ones not necessarily meant for the application and even worse they may be cut or heated with a torch at the local muffler shop to give the lowered stance that was cool. The stance looked good but the ride was terrible. Belltech's design staff had a better idea - Why not build a spindle where the wheels are higher but all of the rest of the front end geometry stays the same? In fact that's just what they did and the drop spindle that launched the Sport truck craze in America was born.
To go along with the drop spindle the rest of the truck suspension needed to be addressed also. Shackles, hanger kits, lowered coil springs and flip kits soon followed. Keeping with the spirit of the "best performing" suspension the Belltech staff designed and created these components using superior materials and designs. The result made Belltech the most asked for and successful truck suspension brand in the industry. Belltech's success in the late '80's and '90's made it possible for the company to grow from a modest beginning, to a larger manufacturing facility with a satellite warehouse and finally in 2003 to the current 115,000+ sq. ft. operation located in Sanger, California. The Sanger facility has made it possible to expand every aspect of the operation.
In early 2005 Belltech and its sister company Suspension Techniques joined the team of KW automotive North America, Inc., the North American arm of KW automotive GmbH, Germany. As part of KW automotive North America, Inc. Belltech continues its growth in product development and technology advancement along with its three sibling companies: KW Suspensions - The world leader in height and dampening adjustable coilover suspension.Over 25 years ago a small company in Fresno, California had an idea to build the "best performing" lowering suspensions for the Chevrolet pickup. Fresno had been a haven for lowered vehicles and trucks were in abundance. Trucks were being lowered but their suspensions were terrible and not very roadworthy. Springs were either replaced with new ones not necessarily meant for the application and even worse they may be cut or heated with a torch at the local muffler shop to give the lowered stance that was cool. The stance looked good but the ride was terrible. Belltech's design staff had a better idea - Why not build a spindle where the wheels are higher but all of the rest of the front end geometry stays the same? In fact that's just what they did and the drop spindle that launched the Sport truck craze in America was born.
To go along with the drop spindle the rest of the truck suspension needed to be addressed also. Shackles, hanger kits, lowered coil springs and flip kits soon followed. Keeping with the spirit of the "best performing" suspension the Belltech staff designed and created these components using superior materials and designs. The result made Belltech the most asked for and successful truck suspension brand in the industry. Belltech's success in the late '80's and '90's made it possible for the company to grow from a modest beginning, to a larger manufacturing facility with a satellite warehouse and finally in 2003 to the current 115,000+ sq. ft. operation located in Sanger, California. The Sanger facility has made it possible to expand every aspect of the operation.
In early 2005 Belltech and its sister company Suspension Techniques joined the team of KW automotive North America, Inc., the North American arm of KW automotive GmbH, Germany. As part of KW automotive North America, Inc. Belltech continues its growth in product development and technology advancement along with its three sibling companies: KW Suspensions - The world leader in height and dampening adjustable coilover suspension.Over 25 years ago a small company in Fresno, California had an idea to build the "best performing" lowering suspensions for the Chevrolet pickup. Fresno had been a haven for lowered vehicles and trucks were in abundance. Trucks were being lowered but their suspensions were terrible and not very roadworthy. Springs were either replaced with new ones not necessarily meant for the application and even worse they may be cut or heated with a torch at the local muffler shop to give the lowered stance that was cool. The stance looked good but the ride was terrible. Belltech's design staff had a better idea - Why not build a spindle where the wheels are higher but all of the rest of the front end geometry stays the same? In fact that's just what they did and the drop spindle that launched the Sport truck craze in America was born.
To go along with the drop spindle the rest of the truck suspension needed to be addressed also. Shackles, hanger kits, lowered coil springs and flip kits soon followed. Keeping with the spirit of the "best performing" suspension the Belltech staff designed and created these components using superior materials and designs. The result made Belltech the most asked for and successful truck suspension brand in the industry. Belltech's success in the late '80's and '90's made it possible for the company to grow from a modest beginning, to a larger manufacturing facility with a satellite warehouse and finally in 2003 to the current 115,000+ sq. ft. operation located in Sanger, California. The Sanger facility has made it possible to expand every aspect of the operation.
In early 2005 Belltech and its sister company Suspension Techniques joined the team of KW automotive North America, Inc., the North American arm of KW automotive GmbH, Germany. As part of KW automotive North America, Inc. Belltech continues its growth in product development and technology advancement along with its three sibling companies: KW Suspensions - The world leader in height and dampening adjustable coilover suspension.